aica.c revision 1.28
1 /* $NetBSD: aica.c,v 1.28 2020/02/23 04:02:45 isaki Exp $ */ 2 3 /* 4 * Copyright (c) 2003 SHIMIZU Ryo <ryo (at) misakimix.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include <sys/cdefs.h> 32 __KERNEL_RCSID(0, "$NetBSD: aica.c,v 1.28 2020/02/23 04:02:45 isaki Exp $"); 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/device.h> 37 #include <sys/kernel.h> 38 #include <sys/proc.h> 39 #include <sys/audioio.h> 40 #include <sys/bus.h> 41 42 #include <dev/audio/audio_if.h> 43 #include <dev/audio/audiovar.h> /* AUDIO_MIN_FREQUENCY */ 44 45 #include <machine/sysasicvar.h> 46 47 #include <dreamcast/dev/g2/g2busvar.h> 48 #include <dreamcast/dev/g2/aicavar.h> 49 #include <dreamcast/dev/microcode/aica_armcode.h> 50 51 #define AICA_REG_ADDR 0x00700000 52 #define AICA_RAM_START 0x00800000 53 #define AICA_RAM_SIZE 0x00200000 54 #define AICA_NCHAN 64 55 #define AICA_TIMEOUT 0x1800 56 57 struct aica_softc { 58 device_t sc_dev; /* base device */ 59 kmutex_t sc_lock; 60 kmutex_t sc_intr_lock; 61 bus_space_tag_t sc_memt; 62 bus_space_handle_t sc_aica_regh; 63 bus_space_handle_t sc_aica_memh; 64 65 /* audio property */ 66 int sc_open; 67 int sc_precision; 68 int sc_channels; 69 int sc_rate; 70 void (*sc_intr)(void *); 71 void *sc_intr_arg; 72 73 int sc_output_master; 74 int sc_output_gain[2]; 75 #define AICA_VOLUME_LEFT 0 76 #define AICA_VOLUME_RIGHT 1 77 78 /* work for output */ 79 void *sc_buffer; 80 void *sc_buffer_start; 81 void *sc_buffer_end; 82 int sc_blksize; 83 int sc_nextfill; 84 }; 85 86 static const struct audio_format aica_formats[] = { 87 { 88 .mode = AUMODE_PLAY, 89 .encoding = AUDIO_ENCODING_SLINEAR_LE, 90 .validbits = 16, 91 .precision = 16, 92 .channels = 2, 93 .channel_mask = AUFMT_STEREO, 94 .frequency_type = 0, 95 .frequency = { AUDIO_MIN_FREQUENCY, 65536 }, 96 }, 97 }; 98 #define AICA_NFORMATS __arraycount(aica_formats) 99 100 int aica_match(device_t, cfdata_t, void *); 101 void aica_attach(device_t, device_t, void *); 102 int aica_print(void *, const char *); 103 104 CFATTACH_DECL_NEW(aica, sizeof(struct aica_softc), aica_match, aica_attach, 105 NULL, NULL); 106 107 const struct audio_device aica_device = { 108 "Dreamcast Sound", 109 "", 110 "aica" 111 }; 112 113 inline static void aica_g2fifo_wait(void); 114 void aica_enable(struct aica_softc *); 115 void aica_disable(struct aica_softc *); 116 void aica_memwrite(struct aica_softc *, bus_size_t, uint32_t *, int); 117 void aica_ch2p16write(struct aica_softc *, bus_size_t, uint16_t *, int); 118 void aica_ch2p8write(struct aica_softc *, bus_size_t, uint8_t *, int); 119 void aica_command(struct aica_softc *, uint32_t); 120 void aica_sendparam(struct aica_softc *, uint32_t, int, int); 121 void aica_play(struct aica_softc *, int, int, int, int); 122 void aica_fillbuffer(struct aica_softc *); 123 124 /* intr */ 125 int aica_intr(void *); 126 127 /* for audio */ 128 int aica_open(void *, int); 129 void aica_close(void *); 130 int aica_query_format(void *, audio_format_query_t *); 131 int aica_set_format(void *, int, 132 const audio_params_t *, const audio_params_t *, 133 audio_filter_reg_t *, audio_filter_reg_t *); 134 int aica_round_blocksize(void *, int, int, const audio_params_t *); 135 size_t aica_round_buffersize(void *, int, size_t); 136 int aica_trigger_output(void *, void *, void *, int, void (*)(void *), void *, 137 const audio_params_t *); 138 int aica_halt_output(void *); 139 int aica_getdev(void *, struct audio_device *); 140 int aica_set_port(void *, mixer_ctrl_t *); 141 int aica_get_port(void *, mixer_ctrl_t *); 142 int aica_query_devinfo(void *, mixer_devinfo_t *); 143 void aica_encode(int, int, int, int, u_char *, u_short **); 144 int aica_get_props(void *); 145 void aica_get_locks(void *, kmutex_t **, kmutex_t **); 146 147 const struct audio_hw_if aica_hw_if = { 148 .open = aica_open, 149 .close = aica_close, 150 .query_format = aica_query_format, 151 .set_format = aica_set_format, 152 .round_blocksize = aica_round_blocksize, 153 .halt_output = aica_halt_output, 154 .getdev = aica_getdev, 155 .set_port = aica_set_port, 156 .get_port = aica_get_port, 157 .query_devinfo = aica_query_devinfo, 158 .round_buffersize = aica_round_buffersize, 159 .get_props = aica_get_props, 160 .trigger_output = aica_trigger_output, 161 .get_locks = aica_get_locks, 162 }; 163 164 int 165 aica_match(device_t parent, cfdata_t cf, void *aux) 166 { 167 static int aica_matched = 0; 168 169 if (aica_matched) 170 return 0; 171 172 aica_matched = 1; 173 return 1; 174 } 175 176 void 177 aica_attach(device_t parent, device_t self, void *aux) 178 { 179 struct aica_softc *sc; 180 struct g2bus_attach_args *ga; 181 int i; 182 183 sc = device_private(self); 184 ga = aux; 185 sc->sc_dev = self; 186 sc->sc_memt = ga->ga_memt; 187 188 mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE); 189 mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_SCHED); 190 191 if (bus_space_map(sc->sc_memt, AICA_REG_ADDR, 0x3000, 0, 192 &sc->sc_aica_regh) != 0) { 193 aprint_error(": can't map AICA register space\n"); 194 return; 195 } 196 197 if (bus_space_map(sc->sc_memt, AICA_RAM_START, AICA_RAM_SIZE, 0, 198 &sc->sc_aica_memh) != 0) { 199 aprint_error(": can't map AICA memory space\n"); 200 return; 201 } 202 203 aprint_normal(": ARM7 Sound Processing Unit\n"); 204 205 aica_disable(sc); 206 207 for (i = 0; i < AICA_NCHAN; i++) 208 bus_space_write_4(sc->sc_memt,sc->sc_aica_regh, i << 7, 209 ((bus_space_read_4(sc->sc_memt, sc->sc_aica_regh, i << 7) 210 & ~0x4000) | 0x8000)); 211 212 /* load microcode, and clear memory */ 213 bus_space_set_region_4(sc->sc_memt, sc->sc_aica_memh, 214 0, 0, AICA_RAM_SIZE / 4); 215 216 aica_memwrite(sc, 0, aica_armcode, sizeof(aica_armcode)); 217 218 aica_enable(sc); 219 220 aprint_normal_dev(self, "interrupting at %s\n", 221 sysasic_intr_string(SYSASIC_IRL9)); 222 sysasic_intr_establish(SYSASIC_EVENT_AICA, IPL_BIO, SYSASIC_IRL9, 223 aica_intr, sc); 224 225 audio_attach_mi(&aica_hw_if, sc, self); 226 227 /* init parameters */ 228 sc->sc_output_master = 255; 229 sc->sc_output_gain[AICA_VOLUME_LEFT] = 255; 230 sc->sc_output_gain[AICA_VOLUME_RIGHT] = 255; 231 } 232 233 void 234 aica_enable(struct aica_softc *sc) 235 { 236 237 bus_space_write_4(sc->sc_memt, sc->sc_aica_regh, 0x28a8, 24); 238 bus_space_write_4(sc->sc_memt, sc->sc_aica_regh, 0x2c00, 239 bus_space_read_4(sc->sc_memt, sc->sc_aica_regh, 0x2c00) & ~1); 240 } 241 242 void 243 aica_disable(struct aica_softc *sc) 244 { 245 246 bus_space_write_4(sc->sc_memt, sc->sc_aica_regh, 0x2c00, 247 bus_space_read_4(sc->sc_memt, sc->sc_aica_regh, 0x2c00) | 1); 248 } 249 250 inline static void 251 aica_g2fifo_wait(void) 252 { 253 int i; 254 255 i = AICA_TIMEOUT; 256 while (--i > 0) 257 if ((*(volatile uint32_t *)0xa05f688c) & 0x11) 258 break; 259 } 260 261 void 262 aica_memwrite(struct aica_softc *sc, bus_size_t offset, uint32_t *src, int len) 263 { 264 int n; 265 266 KASSERT((offset & 3) == 0); 267 n = (len + 3) / 4; /* uint32_t * n (aligned) */ 268 269 aica_g2fifo_wait(); 270 bus_space_write_region_4(sc->sc_memt, sc->sc_aica_memh, 271 offset, src, n); 272 } 273 274 void 275 aica_ch2p16write(struct aica_softc *sc, bus_size_t offset, uint16_t *src, 276 int len) 277 { 278 union { 279 uint32_t w[8]; 280 uint16_t s[16]; 281 } buf; 282 uint16_t *p; 283 int i; 284 285 KASSERT((offset & 3) == 0); 286 287 while (len >= 32) { 288 p = buf.s; 289 *p++ = *src++; src++; 290 *p++ = *src++; src++; 291 *p++ = *src++; src++; 292 *p++ = *src++; src++; 293 *p++ = *src++; src++; 294 *p++ = *src++; src++; 295 *p++ = *src++; src++; 296 *p++ = *src++; src++; 297 *p++ = *src++; src++; 298 *p++ = *src++; src++; 299 *p++ = *src++; src++; 300 *p++ = *src++; src++; 301 *p++ = *src++; src++; 302 *p++ = *src++; src++; 303 *p++ = *src++; src++; 304 *p++ = *src++; src++; 305 306 aica_g2fifo_wait(); 307 bus_space_write_region_4(sc->sc_memt, sc->sc_aica_memh, 308 offset, buf.w , 32 / 4); 309 310 offset += sizeof(uint16_t) * 16; 311 len -= 32; 312 } 313 314 if (len / 2 > 0) { 315 p = buf.s; 316 for (i = 0; i < len / 2; i++) { 317 *p++ = *src++; src++; 318 } 319 320 aica_g2fifo_wait(); 321 bus_space_write_region_4(sc->sc_memt, sc->sc_aica_memh, 322 offset, buf.w, len / 4); 323 } 324 } 325 326 void 327 aica_ch2p8write(struct aica_softc *sc, bus_size_t offset, uint8_t *src, 328 int len) 329 { 330 uint32_t buf[8]; 331 uint8_t *p; 332 int i; 333 334 KASSERT((offset & 3) == 0); 335 while (len >= 32) { 336 p = (uint8_t *)buf; 337 338 *p++ = *src++; src++; 339 *p++ = *src++; src++; 340 *p++ = *src++; src++; 341 *p++ = *src++; src++; 342 *p++ = *src++; src++; 343 *p++ = *src++; src++; 344 *p++ = *src++; src++; 345 *p++ = *src++; src++; 346 *p++ = *src++; src++; 347 *p++ = *src++; src++; 348 *p++ = *src++; src++; 349 *p++ = *src++; src++; 350 *p++ = *src++; src++; 351 *p++ = *src++; src++; 352 *p++ = *src++; src++; 353 *p++ = *src++; src++; 354 *p++ = *src++; src++; 355 *p++ = *src++; src++; 356 *p++ = *src++; src++; 357 *p++ = *src++; src++; 358 *p++ = *src++; src++; 359 *p++ = *src++; src++; 360 *p++ = *src++; src++; 361 *p++ = *src++; src++; 362 *p++ = *src++; src++; 363 *p++ = *src++; src++; 364 *p++ = *src++; src++; 365 *p++ = *src++; src++; 366 *p++ = *src++; src++; 367 *p++ = *src++; src++; 368 *p++ = *src++; src++; 369 *p++ = *src++; src++; 370 371 aica_g2fifo_wait(); 372 bus_space_write_region_4(sc->sc_memt, sc->sc_aica_memh, 373 offset, buf, 32 / 4); 374 375 offset += 32; 376 len -= 32; 377 } 378 379 if (len) { 380 p = (uint8_t *)buf; 381 for (i = 0; i < len; i++) { 382 *p++ = *src++; src++; 383 } 384 385 aica_g2fifo_wait(); 386 bus_space_write_region_4(sc->sc_memt, sc->sc_aica_memh, 387 offset, buf, len / 4); 388 } 389 } 390 391 int 392 aica_open(void *addr, int flags) 393 { 394 struct aica_softc *sc; 395 396 sc = addr; 397 if (sc->sc_open) 398 return EBUSY; 399 400 sc->sc_intr = NULL; 401 sc->sc_open = 1; 402 403 return 0; 404 } 405 406 void 407 aica_close(void *addr) 408 { 409 struct aica_softc *sc; 410 411 sc = addr; 412 sc->sc_open = 0; 413 sc->sc_intr = NULL; 414 } 415 416 int 417 aica_query_format(void *addr, audio_format_query_t *afp) 418 { 419 420 return audio_query_format(aica_formats, AICA_NFORMATS, afp); 421 } 422 423 int 424 aica_set_format(void *addr, int setmode, 425 const audio_params_t *play, const audio_params_t *rec, 426 audio_filter_reg_t *pfil, audio_filter_reg_t *rfil) 427 { 428 struct aica_softc *sc; 429 430 sc = addr; 431 sc->sc_precision = play->precision; 432 sc->sc_channels = play->channels; 433 sc->sc_rate = play->sample_rate; 434 return 0; 435 } 436 437 int 438 aica_round_blocksize(void *addr, int blk, int mode, const audio_params_t *param) 439 { 440 #if 0 /* XXX this has not worked since kent-audio1 merge? */ 441 struct aica_softc *sc; 442 443 sc = addr; 444 switch (sc->sc_precision) { 445 case 4: 446 if (sc->sc_channels == 1) 447 return AICA_DMABUF_SIZE / 4; 448 else 449 return AICA_DMABUF_SIZE / 2; 450 break; 451 case 8: 452 if (sc->sc_channels == 1) 453 return AICA_DMABUF_SIZE / 2; 454 else 455 return AICA_DMABUF_SIZE; 456 break; 457 case 16: 458 if (sc->sc_channels == 1) 459 return AICA_DMABUF_SIZE; 460 else 461 return AICA_DMABUF_SIZE * 2; 462 break; 463 default: 464 break; 465 } 466 467 #endif 468 return AICA_DMABUF_SIZE / 4; 469 } 470 471 size_t 472 aica_round_buffersize(void *addr, int dir, size_t bufsize) 473 { 474 struct aica_softc *sc; 475 476 sc = addr; 477 if (bufsize > 65536 * sc->sc_channels) 478 return 65536 * sc->sc_channels; 479 return bufsize; 480 } 481 482 void 483 aica_command(struct aica_softc *sc, uint32_t command) 484 { 485 486 bus_space_write_4(sc->sc_memt, sc->sc_aica_memh, 487 AICA_ARM_CMD_COMMAND, command); 488 bus_space_write_4(sc->sc_memt,sc->sc_aica_memh, AICA_ARM_CMD_SERIAL, 489 bus_space_read_4(sc->sc_memt, sc->sc_aica_memh, 490 AICA_ARM_CMD_SERIAL) + 1); 491 } 492 493 void 494 aica_sendparam(struct aica_softc *sc, uint32_t command, 495 int32_t lparam, int32_t rparam) 496 { 497 498 bus_space_write_4(sc->sc_memt,sc->sc_aica_memh, 499 AICA_ARM_CMD_LPARAM, lparam); 500 bus_space_write_4(sc->sc_memt,sc->sc_aica_memh, 501 AICA_ARM_CMD_RPARAM, rparam); 502 503 aica_command(sc, command); 504 } 505 506 void 507 aica_play(struct aica_softc *sc, int blksize, int channel, int rate, int prec) 508 { 509 510 bus_space_write_4(sc->sc_memt,sc->sc_aica_memh, 511 AICA_ARM_CMD_BLOCKSIZE, blksize); 512 bus_space_write_4(sc->sc_memt,sc->sc_aica_memh, 513 AICA_ARM_CMD_CHANNEL, channel); 514 bus_space_write_4(sc->sc_memt,sc->sc_aica_memh, 515 AICA_ARM_CMD_RATE, rate); 516 bus_space_write_4(sc->sc_memt,sc->sc_aica_memh, 517 AICA_ARM_CMD_PRECISION, prec); 518 519 aica_command(sc, AICA_COMMAND_PLAY); 520 } 521 522 void 523 aica_fillbuffer(struct aica_softc *sc) 524 { 525 526 if (sc->sc_channels == 2) { 527 if (sc->sc_precision == 16) { 528 aica_ch2p16write(sc, 529 AICA_DMABUF_LEFT + sc->sc_nextfill, 530 (uint16_t *)sc->sc_buffer + 0, sc->sc_blksize / 2); 531 aica_ch2p16write(sc, 532 AICA_DMABUF_RIGHT + sc->sc_nextfill, 533 (uint16_t *)sc->sc_buffer + 1, sc->sc_blksize / 2); 534 } else if (sc->sc_precision == 8) { 535 aica_ch2p8write(sc, AICA_DMABUF_LEFT + sc->sc_nextfill, 536 (uint8_t *)sc->sc_buffer + 0, sc->sc_blksize / 2); 537 aica_ch2p8write(sc, AICA_DMABUF_RIGHT + sc->sc_nextfill, 538 (uint8_t *)sc->sc_buffer + 1, sc->sc_blksize / 2); 539 } 540 } else { 541 aica_memwrite(sc, AICA_DMABUF_MONO + sc->sc_nextfill, 542 sc->sc_buffer, sc->sc_blksize); 543 } 544 545 sc->sc_buffer = (int8_t *)sc->sc_buffer + sc->sc_blksize; 546 if (sc->sc_buffer >= sc->sc_buffer_end) 547 sc->sc_buffer = sc->sc_buffer_start; 548 549 sc->sc_nextfill ^= sc->sc_blksize / sc->sc_channels; 550 } 551 552 int 553 aica_intr(void *arg) 554 { 555 struct aica_softc *sc; 556 557 sc = arg; 558 559 mutex_spin_enter(&sc->sc_intr_lock); 560 561 aica_fillbuffer(sc); 562 563 /* call audio interrupt handler (audio_pint()) */ 564 if (sc->sc_open && sc->sc_intr != NULL) { 565 (*(sc->sc_intr))(sc->sc_intr_arg); 566 } 567 568 /* clear SPU interrupt */ 569 bus_space_write_4(sc->sc_memt, sc->sc_aica_regh, 0x28bc, 0x20); 570 571 mutex_spin_exit(&sc->sc_intr_lock); 572 573 return 1; 574 } 575 576 int 577 aica_trigger_output(void *addr, void *start, void *end, int blksize, 578 void (*intr)(void *), void *arg, const audio_params_t *param) 579 { 580 struct aica_softc *sc; 581 582 sc = addr; 583 584 sc->sc_buffer_start = sc->sc_buffer = start; 585 sc->sc_buffer_end = end; 586 sc->sc_blksize = blksize; 587 sc->sc_nextfill = 0; 588 589 sc->sc_intr = intr; 590 sc->sc_intr_arg = arg; 591 592 /* 593 * The aica arm side driver uses a double buffer to play sounds. 594 * we need to fill two buffers before playing. 595 */ 596 aica_fillbuffer(sc); 597 aica_fillbuffer(sc); 598 599 /* ...and start playing */ 600 aica_play(sc, blksize / sc->sc_channels, sc->sc_channels, sc->sc_rate, 601 sc->sc_precision); 602 603 return 0; 604 } 605 606 int 607 aica_halt_output(void *addr) 608 { 609 struct aica_softc *sc; 610 611 sc = addr; 612 aica_command(sc, AICA_COMMAND_STOP); 613 return 0; 614 } 615 616 int 617 aica_getdev(void *addr, struct audio_device *ret) 618 { 619 620 *ret = aica_device; 621 return 0; 622 } 623 624 int 625 aica_set_port(void *addr, mixer_ctrl_t *mc) 626 { 627 struct aica_softc *sc; 628 629 sc = addr; 630 switch (mc->dev) { 631 case AICA_MASTER_VOL: 632 sc->sc_output_master = 633 mc->un.value.level[AUDIO_MIXER_LEVEL_MONO] & 0xff; 634 aica_sendparam(sc, AICA_COMMAND_MVOL, 635 sc->sc_output_master, sc->sc_output_master); 636 break; 637 case AICA_OUTPUT_GAIN: 638 sc->sc_output_gain[AICA_VOLUME_LEFT] = 639 mc->un.value.level[AUDIO_MIXER_LEVEL_LEFT] & 0xff; 640 sc->sc_output_gain[AICA_VOLUME_RIGHT] = 641 mc->un.value.level[AUDIO_MIXER_LEVEL_RIGHT] & 0xff; 642 aica_sendparam(sc, AICA_COMMAND_VOL, 643 sc->sc_output_gain[AICA_VOLUME_LEFT], 644 sc->sc_output_gain[AICA_VOLUME_RIGHT]); 645 break; 646 default: 647 return EINVAL; 648 } 649 650 return 0; 651 } 652 653 int 654 aica_get_port(void *addr, mixer_ctrl_t *mc) 655 { 656 struct aica_softc *sc; 657 658 sc = addr; 659 switch (mc->dev) { 660 case AICA_MASTER_VOL: 661 if (mc->un.value.num_channels != 1) 662 return EINVAL; 663 mc->un.value.level[AUDIO_MIXER_LEVEL_MONO] = 664 L16TO256(L256TO16(sc->sc_output_master)); 665 break; 666 case AICA_OUTPUT_GAIN: 667 mc->un.value.level[AUDIO_MIXER_LEVEL_LEFT] = 668 sc->sc_output_gain[AICA_VOLUME_LEFT]; 669 mc->un.value.level[AUDIO_MIXER_LEVEL_RIGHT] = 670 sc->sc_output_gain[AICA_VOLUME_RIGHT]; 671 break; 672 default: 673 return EINVAL; 674 } 675 return 0; 676 } 677 678 int 679 aica_query_devinfo(void *addr, mixer_devinfo_t *md) 680 { 681 682 switch (md->index) { 683 case AICA_MASTER_VOL: 684 md->type = AUDIO_MIXER_VALUE; 685 md->mixer_class = AICA_OUTPUT_CLASS; 686 md->prev = md->next = AUDIO_MIXER_LAST; 687 strcpy(md->label.name, AudioNmaster); 688 md->un.v.num_channels = 1; 689 strcpy(md->un.v.units.name, AudioNvolume); 690 return 0; 691 case AICA_OUTPUT_GAIN: 692 md->type = AUDIO_MIXER_VALUE; 693 md->mixer_class = AICA_OUTPUT_CLASS; 694 md->prev = md->next = AUDIO_MIXER_LAST; 695 strcpy(md->label.name, AudioNoutput); 696 md->un.v.num_channels = 2; 697 strcpy(md->label.name, AudioNvolume); 698 return 0; 699 case AICA_OUTPUT_CLASS: 700 md->type = AUDIO_MIXER_CLASS; 701 md->mixer_class = AICA_OUTPUT_CLASS; 702 md->next = md->prev = AUDIO_MIXER_LAST; 703 strcpy(md->label.name, AudioCoutputs); 704 return 0; 705 } 706 707 return ENXIO; 708 } 709 710 int 711 aica_get_props(void *addr) 712 { 713 714 return AUDIO_PROP_PLAYBACK; 715 } 716 717 void 718 aica_get_locks(void *addr, kmutex_t **intr, kmutex_t **thread) 719 { 720 struct aica_softc *sc; 721 722 sc = addr; 723 *intr = &sc->sc_intr_lock; 724 *thread = &sc->sc_lock; 725 } 726
Indexes created Wed Oct 22 00:09:40 GMT 2025